The post itself does raise a good point about how CRWBY tries to emotionally manipulate the audience at least.
Raven, despite being much more evil than Ironwood ever could be, is presented as redeemable through how the characters interact with her, and how the story focus's on her struggle with doing what she does and having her actually allowed to argue her position before having the 'Truly evil guys can't cry. Sad grill' ending. Ironwood, instead of being written as a villain, just has the music, direction and emoting made to cast him in an unsympathetic light. He doesn't get to argue his position, he doesn't get to break down in tears to get sympathy points, he only gets to be constantly told he's a tyrannical maniac who does heinous things. We know he's evil because the scene focus's, not on what he's actually doing and thinking, but on how cold and evil he looks. They manipulate the audience by allowing the character they favor to show their humanity while the character they don't is mostly denied it. Same reason why the likes of Harriet in the Ace Ops fight is suddenly blood thirsty and talking like she and Ruby had some petty off screen rivalry.
It's basically drawing a mustache and horns on him and calling it a day. "Hey, Kids! He looks evil and the always right protagonists don't agree with him, so he must be super duper bad."